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onsemi P6KE68ARL
- Part No.:
- P6KE68ARL
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- T-18, Axial
- Datasheet:
-
P6KE68ARL.pdf
- Description:
- TVS DIODE 58.1VWM 92VC AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:4,887
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Product details
Overview
P6KE68ARL from ON Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in axial-leaded Surmetic-40 package, designed to protect sensitive electronics against 600 W peak transient surges. It features a 58.1 V working peak reverse voltage (VRWM), 68 V breakdown voltage (VBR) at 1 mA test current, and clamps to ≤92 V at 6.5 A peak pulse current - used in power supply input stages, industrial control I/O protection, and telecom line interfaces.
For engineers reviewing the P6KE68ARL datasheet, pinout, applications, or equivalent options, key selection criteria include VRWM margin over operating DC voltage, clamping ratio (VC/VBR = 1.35), thermal resistance (RJL = 20 °C/W), surge robustness (100 A forward surge), and UL 497B recognition for isolated loop circuit protection.
Technical Context
The P6KE68ARL operates as a silicon avalanche diode with fast <1 ns response time and low leakage (<5 µA @ VRWM). Its unidirectional polarity enables DC-biased protection where reverse conduction must be blocked until clamping threshold is exceeded.
It uses a thermoset plastic Surmetic-40 axial package (Case 017AA) with cathode band marking, rated for −55 °C to +150 °C operation and 260 °C soldering tolerance. Thermal derating follows linear 50 mW/°C reduction above 50 °C lead temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 58.1 V - maximum continuous reverse voltage before significant leakage; sets minimum system DC bus or signal swing margin |
| VBR @ IT=1 mA | 64.6–71.4 V - breakdown range defining reliable avalanche onset; ensures predictable clamping initiation |
| VC @ IPP=6.5 A | 92 V - maximum clamped voltage during 1 ms surge; determines protected circuit's peak stress level |
| PPK | 600 W - non-repetitive peak power handling per 1 ms pulse; defines single-event surge survivability |
| IR @ VRWM | 5 µA - reverse leakage at working voltage; negligible loading on high-impedance bias networks |
| RJL | 20 °C/W - junction-to-lead thermal resistance; enables thermal design using lead as heatsink |
| Response Time | <1 ns - time from transient onset to clamping; critical for protecting fast logic and analog front-ends |
Pinout & Package
Surmetic-40 axial-leaded package (Case 017AA), 8.38–8.89 mm body length, 3.30–3.68 mm diameter, cathode indicated by colored band. Leads are tinned, solderable, and rated for 260 °C / 10 s.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in unidirectional configuration |
| Cathode | Avalanche clamping terminal | Marked with band; connected to protected line (e.g., +12 V rail or RS-485 A/B line) |
Key Features
| Feature | Design Value |
|---|---|
| UL 497B Recognition | Qualified for isolated loop circuit protection - meets safety requirements for telecom and industrial isolation barriers |
| ESD Robustness | Class 3 (>16 kV HBM) - withstands handling and system-level ESD without degradation |
| Low Clamping Ratio | VC/VBR ≈ 1.35 - tight voltage control minimizes overvoltage stress on downstream ICs |
| Pb-Free Option | P6KE68ARLG variant available - compliant with RoHS and JEDEC J-STD-020 reflow profiles |
| Steady-State Power | 5.0 W @ TL ≤ 25°C - supports continuous dissipation in low-duty-cycle surge environments |
Applications
| Industrial PLC I/O Protection | AC-DC Power Supply Input |
|---|---|
Use Scenario: Protecting 24 V digital input modules in programmable logic controllers from inductive kickback and lightning-induced surges on field wiring. IC Role / Device Role / Timing Role: Unidirectional TVS placed across input terminals to clamp transients before they reach optocoupler or MCU GPIO. Use Value: With 58.1 V VRWM and 92 V VC, it safely tolerates 24 V nominal + 10% ripple while limiting surge energy to non-destructive levels for downstream isolation components. | Use Scenario: Safeguarding bridge rectifier outputs and bulk capacitor inputs in offline AC-DC adapters against line surges and load dump events. IC Role / Device Role / Timing Role: Parallel-connected TVS absorbing 600 W transients within 1 ns, preventing overvoltage damage to electrolytic capacitors and controller ICs. Use Value: 600 W peak power rating and 20 °C/W thermal resistance allow direct mounting to PCB copper pour for sustained surge handling without external heatsinking. |
| Telecom Line Interface | Medical Equipment Signal Lines |
Use Scenario: Shielding RS-485/RS-232 data lines in base station backhaul equipment from induced surges on long cable runs. IC Role / Device Role / Timing Role: Cathode-to-line, anode-to-ground placement provides asymmetric protection aligned with signal polarity and common-mode noise rejection. Use Value: UL 497B certification validates suitability for telecom isolation boundaries; <1 ns response prevents data corruption during fast EFT bursts. | Use Scenario: Guarding analog sensor inputs (e.g., ECG leads, pressure transducers) in Class II medical devices against electrostatic discharge and defibrillator pulses. IC Role / Device Role / Timing Role: Low-leakage (5 µA) unidirectional TVS ensures no DC offset or signal distortion on high-impedance biopotential paths. Use Value: 16 kV HBM ESD rating and −55 °C to +150 °C operating range support reliability in sterilizable, portable diagnostic hardware. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ64A | Surface-mount SMB package; 64 V VRWM; 100 W peak power; 10.3 A IPP | Lower surge capacity; requires PCB layout change; better for space-constrained designs | Select when board area is limited and surge threat level is moderate (e.g., consumer-grade USB ports) |
| 1.5KE68A | Same axial package; 600 W rating; 58.1 V VRWM; but higher clamping voltage (98 V @ 6.1 A) | Less effective voltage limiting; slightly lower reliability under repeated surges due to higher thermal impedance | Acceptable for cost-sensitive industrial controls where 6 V higher clamping is tolerable |
Compared with SMBJ64A and 1.5KE68A, the P6KE68ARL delivers superior surge robustness in through-hole form factor, tighter clamping (92 V vs. 98 V), and UL 497B certification - making it preferred for safety-critical, high-energy industrial and telecom protection.
Availability
P6KE68ARL is available at Aetrix Electronics and suitable for industrial PLC I/O protection, AC-DC power supply input stages, and telecom line interface circuits requiring stable component supply and long-term lifecycle support.
Supply support for P6KE68ARL includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
ON Semiconductor (now part of onsemi) is a global semiconductor supplier specializing in power management, analog, sensors, and discrete devices for automotive, industrial, cloud, and medical markets.
The P6KE68ARL belongs to the P6KE6.8A Series of 600 W axial-leaded TVS diodes engineered for high-reliability transient suppression in harsh electrical environments - particularly where UL recognition, surge margin, and thermal stability are mandatory.
FAQ
What is the maximum clamping voltage of the P6KE68ARL under surge conditions?
The P6KE68ARL clamps to a maximum of 92 V when subjected to its rated 6.5 A peak pulse current (IPP) with a 1 ms waveform. This value is measured per Figure 4 in the official datasheet and represents the upper limit of voltage seen by protected circuitry during worst-case transient events. The P6KE68ARL maintains this clamping performance across its full operating temperature range and is validated for repetitive surge duty cycles when thermally managed per Figure 2 derating curves.
Is the P6KE68ARL RoHS-compliant and halogen-free?
Yes, the P6KE68ARL is RoHS-compliant and halogen-free. Its "RL" suffix denotes tape-and-reel packaging, and the device is manufactured using lead-free materials per JEDEC J-STD-020 standards. The Pb-free version is designated P6KE68ARLG and shares identical electrical specifications. Both variants meet IPC/JEDEC standard J-STD-609 for marking and reporting of hazardous substances, and the Surmetic-40 package contains no brominated flame retardants.
How does the P6KE68ARL differ from bidirectional TVS diodes like P6KE68CA?
The P6KE68ARL is unidirectional and blocks reverse current up to 58.1 V VRWM, then clamps only in reverse avalanche mode - ideal for DC-biased lines such as power rails or RS-485. In contrast, P6KE68CA is bidirectional with symmetrical ±68 V breakdown, suited for AC signals or floating differential pairs. The P6KE68ARL offers lower leakage and tighter clamping in DC applications, while P6KE68CA provides equal protection in both polarities at the expense of higher capacitance and reduced VRWM margin.
Can the P6KE68ARL be used in parallel to increase surge current handling?
No, the P6KE68ARL should not be paralleled without external balancing resistors. Due to manufacturing variations in VBR (64.6–71.4 V), uneven current sharing occurs during surges, causing one device to absorb most energy and fail prematurely. For higher current capability, select a higher-rated part such as P6KE75ARL or use a TVS array with matched characteristics. The P6KE68ARL is characterized for single-device operation per its 6.5 A IPP rating and thermal model.
What is the meaning of the "RL" suffix in P6KE68ARL?
The "RL" suffix in P6KE68ARL indicates tape-and-reel packaging: 4,000 units per reel, axial-leaded format compatible with automated insertion equipment. It does not denote RoHS compliance (that is indicated by "G") nor functional revision. The P6KE68ARL shares identical electrical, thermal, and mechanical specifications with the box-packaged P6KE68A variant - only the shipping method differs. Reel packaging ensures consistent orientation (cathode band facing outward) and ESD-safe handling per ANSI/ESD S20.20.
P6KE68ARL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- T-18, Axial
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 58.1V
- Voltage - Breakdown (Min):
- 64.6V
- Voltage - Clamping (Max) @ Ipp:
- 92V
- Current - Peak Pulse (10/1000µs):
- 6.5A (8/20µs)
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- Axial
P6KE68ARL FAQ
1.How can I place an order for P6KE68ARL through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE68ARL on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for P6KE68ARL reliable?
The price and inventory of P6KE68ARL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE68ARL is usually 5 days.
3.What payment methods are accepted for P6KE68ARL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE68ARL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE68ARL?
P6KE68ARL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE68ARL order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for P6KE68ARL?
For technical support, including P6KE68ARL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE68ARL requirements.
6.How does Aetrix verify that P6KE68ARL is sourced from the original manufacturer or authorized distributors?
All P6KE68ARL products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that P6KE68ARL meets industry standards.
7.What is the process for return or replacement of P6KE68ARL?
All P6KE68ARL units undergo pre-shipment inspection (PSI). If there is an issue with P6KE68ARL, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The P6KE68ARL part is unused and in its original packaging.
Return procedure for P6KE68ARL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6KE68ARL Tags
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Diodes Incorporated
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Diodes Incorporated
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